Question
Question: The stability of dihalides of Si, Ge, Sn and Pb increases steadily in the sequence:...
The stability of dihalides of Si, Ge, Sn and Pb increases steadily in the sequence:
A
GeX2< SiX2< SnX2< PbX2
B
SiX2< GeX2< PbX2< SnX2
C
SiX2< GeX2< SnX2< PbX2
D
PbX2< SnX2< GeX2< SiX2
Answer
SiX2< GeX2< SnX2< PbX2
Explanation
Solution
Due to the inert pair effect (the reluctance of ns2 electrons of outermost shell to participate in bonding), the stability of M2+ ions (of group IV elements) increases as we go down the group.